US4112730A - Carriage drawing machine for uniformly drawing elongated material to be drawn - Google Patents

Carriage drawing machine for uniformly drawing elongated material to be drawn Download PDF

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Publication number
US4112730A
US4112730A US05/828,884 US82888477A US4112730A US 4112730 A US4112730 A US 4112730A US 82888477 A US82888477 A US 82888477A US 4112730 A US4112730 A US 4112730A
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United States
Prior art keywords
jaws
carriage
drawn
jaw
machine according
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Expired - Lifetime
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US05/828,884
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English (en)
Inventor
Johann Greven
Johann Mostert
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Schumag Schumacher Metallwerke AG
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Schumag Schumacher Metallwerke AG
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES, PROFILES OR LIKE SEMI-MANUFACTURED PRODUCTS OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C1/00—Manufacture of metal sheets, wire, rods, tubes or like semi-manufactured products by drawing
    • B21C1/16—Metal drawing by machines or apparatus in which the drawing action is effected by means other than drums, e.g. by a longitudinally-moved carriage pulling or pushing the work or stock for making metal sheets, rods or tubes
    • B21C1/27—Carriages; Drives
    • B21C1/28—Carriages; Connections of grippers thereto; Grippers

Definitions

  • the invention relates to a carriage drawing machine for uniformly drawing elongated material to be drawn, having two drawing carriages reciprocatingly displaceable in mutually opposite directions, a drawing jaw vise on each carriage for alternatingly gripping the material to be drawn, each of the vises having two drawing jaws held in a housing by a wedge structure with bearing rollers interposed which serves to self-lock during the drawing.
  • a carriage drawing machine of this general type is the subject of a patent application by one of us filed concurrently herewith U.S. patent application Ser. No. 828,901.
  • a carriage drawing machine for uniformly drawing elongated material to be drawn, having two drawing carriages reciprocatingly displaceable in mutually opposite directions, a drawing jaw vise on each carriage for alternately gripping the material to be drawn, each of the vises having two drawing jaws held in a housing by a wedge structure with bearing rollers interposed which serves to self-lock during the drawing, both of the drawing jaw vises disposed to receive and simultaneously draw two bars of the material to be drawn, at least one of the two drawing jaws being engageable in common with both of the bars, and including an equalizing support in association with the other of the two drawing jaws.
  • the drawing jaws are disposed relative to one another for accomodating adjacently traveling rods or strands of the material to be drawn.
  • the drawing jaws are disposed one above the other for cooperatively gripping the material to be drawn.
  • At least one of the sides of the cooperating drawing jaws facing toward one another has shaped constructions accommodated to the profile of the rods or strands.
  • This feature also constitutes an invention applicable to a carriage drawing machine provided for drawing only one strand or bar.
  • the drawing jaws for both of the rods are disposed one above the other, and each thereof is engageable in common with both of the rods, one of the drawing jaws having a scale-beam mounting and having an axis extending in a direction parallel to the direction of the drawing.
  • the mounting or bearing like that of a scale-beam is an especially advantageous type of equalizing mounting with respect to differences in cross section for the two strands or rods to be drawn.
  • the jaws are disposed one above the other, one of the drawing jaws being divided for the rods of material to be drawn.
  • the drawing jaws are disposed one above the other, and within a clamping path during take-over of the material to be drawn, the lower drawing jaw being displaceable parallel to the direction of drawing and the upper drawing jaw parallel to a wedge wall of the housing of the drawing jaw vise.
  • This feature of the invention permits a marked accommodation to the various requirements when drawing various types of material to be drawn.
  • the drawing jaws are disposed one above the other, the upper drawing jaw having a roller-shaped flat bearing member at the underside thereof, the bearing member being pivotable in a holder about an axis parallel to the direction of drawing, the bearing member having a widening at the underside thereof for gripping both of the bars to be drawn.
  • This feature widely permits the simultaneous drawing of two strands or bars of varying cross section.
  • the differences in the cross section are relatively easily and reliably equalized, and both strands or bars are gripped securely.
  • the widening is constructed as a separate member threadedly secured to the flat underside of the roller-shaped bearing members.
  • the drawing jaws are disposed one above the other, the lower drawing jaw being constructed as a flat circular cylindrical section pivotable in a bearing trough about an axis parallel to the direction of drawing and having a width at the top thereof adequate for embodiment has the advantage of an especially flat type of construction.
  • the lower drawing jaw is adjustable in elevation. This feature is also inventively applicable to drawing machines provided for drawing only one strand or rod.
  • the vises respectively, have a third drawing jaw fixedly disposed intermediate the other two drawing jaws, the other two drawing jaws being displaceable within a clamping path on respective wedge paths.
  • both of the sides of the cooperating drawing jaws facing towards one another are formed with rod-accommodating shaped constructions mutually complementing one another.
  • the shaped constructions in both of the drawing jaws differ from one another.
  • FIG. 1 is an elevational view, partly in section, of drawing jaws disposed above one another in a wedge-shaped housing;
  • FIG. 2 is an enlarged fragmentary diagrammatic view of the lower flat drawing jaw and the upper rotating drawing jaw having shaped construction accommodated to the profile of the elongated material to be drawn;
  • FIG. 3 is a fragmentary view of FIG. 2 modified to accommodate elongated drawable material of different thicknesses yet having an upper drawing jaw with correspondingly similar shaped structures;
  • FIG. 4 is a view similar to that of FIG. 3 wherein the material to be drawn are of unequal thickness, and the shaped constructions at the upper drawing jaw are of unequal size;
  • FIG. 5 is a fragmentary view of a lower drawing jaw with shaped constructions
  • FIG. 6 is a view similar to that of FIG. 5 of a modified form of lower drawing jaw accommodated for tubular material;
  • FIG. 7 is a view similar to those of FIGS. 3 and 4 of a modified form of the device of the invention, wherein both lower and upper jaws have shaped constructions;
  • FIG. 8 is a view like that of FIG. 7 wherein both lower and upper jaws have shaped constructions that are, however, for tubular material;
  • FIGS. 9a, 9b and 9c are sectional, side elevational and top plan views, respectively, of a drawing jaw vise with a release control, wedge-shaped housing and drawing jaws of which the upper shaped construction and the lower exhibit a pivotable flat circular-cylindrical section;
  • FIG. 10a, 10b and 10c are views respectively similar to those of FIGS. 9a, 9b and 9c, of another embodiment of the invention wherein the upper jaw is divided for two elongated strands of material that are to be drawn, and a common support or bearing is provided on the housing for the drawing jaw vise.
  • FIGS. 11a, 11b and 11c are also views respectively similar to those of FIGS. 9a, 9b and 9c, of yet another embodiment of the invention wherein the lower jaw is not pivotable, and including separate releasing controls for the upper drawings jaws;
  • FIG. 12 is a sectional view of a modified form of the lower jaw, which is adjustable in height.
  • FIGS. 13a and 13b are diagrammatic views, respectively, in section and in plan of a drawing jaw vise with three mutually adjacent drawing jaws of which the middle jaw is stationary and both of the other drawing jaws are displaceable within a wedging path on wedge rails.
  • FIG. 1 there is shown a drawing jaw vise 1 having a lower wall 2 extending parallel to the direction of drawing represented by the arrow 3.
  • the lower drawing jaw 5 within the clamping or wedge path has a slight shiftability or mobility opposite to the drawing direction of the arrow 3.
  • the material to be drawn is disposed on the lower drawing jaw.
  • the upper wall 7 of the drawing jaw vise 1 is inclined wedge-shaped opposite to the drawing direction represented by the arrow 3.
  • the upper drawing jaw 9 is shiftable parallel to the wedge wall 7 within the confines or framework of the clamping path.
  • a control cylinder 10 serves to release the drawing jaw movements.
  • FIG. 2 there is shown material 6 to be drawn which is formed of two strands or bars which are simultaneously drawn and, consequently, are simultaneously gripped by the drawing jaws 5 and 9.
  • the upper drawing jaw 9 has a roller-shaped, bearing part 11 flattened at the underside thereof and pivotable in a holder 12 about an axis parallel to the direction of drawing.
  • the bearing part 11 is provided, at the underside thereof, with an enlargement or widening for gripping both bars 6.
  • the widening is a separate member and is threadedly fastened to the flat underside of the roller-shaped bearing member 11 by means of screws 13.
  • Slots 14 serve, by means of screws, to threadedly fasten a holder member 15, as desired, more or less tightly.
  • the drawing jaw 9 is mounted as a scale-beam, and differences in cross section of the rods or strands 6 can be equalized.
  • the drawing jaw 9 has shaped constructions 16 accommodated to the profile or cross section of the bars 6. The location of the rods 6 during the drawing operation is therefore fixed, and the specific pressure, which is exerted upon the surface of the rods 6 during the drawing operation is minimized. With an adequate length of the drawing jaws 5 and 9, the specific pressure can be kept so small that no damage is caused to the surface of the material to be drawn.
  • the drawing jaws 5 and 9 are set out for adjacently traveling rods or strands 6.
  • the drawing jaws 5 and 9 are disposed one above the other.
  • Each of the drawing jaws 5 and 9 that are disposed above one another is common to both rods or strands 6.
  • FIG. 3 a corresponding construction of the drawing jaws 5 and 9 is shown, however, with rods or strands 17 and 18 of the material to be drawn that are of different thickness. Slight differences in the thickness of the rods or strands 17 and 18 can be equalized or balanced by the scale-beam or balance-beam mounting of the drawing jaw 9. In this regard, the shaped constructions 16 can remain unchanged.
  • FIG. 4 Another possible embodiment of the drawing jaws 5 and 9 is shown in FIG. 4.
  • Shaped constructions 20 and 21 of unlike size in the drawing jaw 19 correspond to the unequally thick strands or bars 17 and 18. This type of construction is primarily of importance if the relative difference in the thickness of the strands or bars 17 and 18 is very great. For a greater diameter than shown for the bar 18, the drawing jaw 19 can assume a position such as that of the drawing jaw 9 of FIG. 4 due to the balance-beam or scale-beam mounting thereof.
  • the shaped constructions 25 for the bars or strands 24 can be provided in the lower drawing jaw 22.
  • FIG. 5 shows an embodiment for solid material to be drawn.
  • FIG. 6 shows shaped constructions 27 for tubular strands or bars 26 in the lower drawing jaw 23.
  • the formed constructions are provided for a real support, whereas, for solid material, linear supports are possible. This applied in general also to the constructions according to FIGS. 2, 3 and 4.
  • the formed constructions must correspondingly be accommodated or matched also in these cases. Just such a measure is recommended for material of softer characteristic or property, such as copper, for example.
  • shaped constructions 25, 27, as well as 16, 32 are respectively provided in the lower drawing jaw 28, 30, as well as in the upper drawing jaw 29, 31.
  • the strand or rod material 24 is taken to be solid material, and the strand or rod material 26 tubular material.
  • the shaped constructions should be complementary, respectively, above and below.
  • the shaped constructions can also be different above and below and, nevertheless, complementary. Shaped constructions both in the upper as well as in the lower drawing jaw increase the supporting surface and provide therewith gentle handling of the surface of the material to be drawn. Under certain circumstances, because of the greater supporting surface, the drawing jaw can also be shortened in the length thereof without exceeding the permissible specific bearing pressure.
  • the balanced mounting can be provided also for the lower drawing jaw 33.
  • the lower drawing jaw 33 exhibits, in this regard, a pivotal flat circular cylindrical section 34 having a width at the top thereof adequate for clamping both rods or strands 35 and 36.
  • a releasing control with a control cylinder 10 acts upon the upper drawing jaw 37 for displacing the upper drawing jaw 37 within the clamping path on a wedge path or track parallel to the housing wall 7.
  • the lower drawing jaw 33 with the circular cylindrical section 34 corresponds to that shown in FIGS. 9a, 9b and 9c.
  • the upper drawing jaw 38, 39 is divided. Both parts thereof are actuated by a single releasing control with the control cylinder 10 and, in fact, through the hinged bracket 40.
  • the lower drawing jaw 5 is not pivotable.
  • the divided upper drawing jaw 38, 39 cooperates with two hinged brackets 41, 42 and is controlled separately by the control cylinder 10', 10".
  • the lower drawing jaw is adjustable in the elevation thereof and assembled of two parts 43, 44 which are slidingly adjustable on one another with the wedge surface 45 thereof.
  • the screw 46 serves for effecting the adjustment and has an adequate free space provided therefor in the member 44 for effecting the adjustment in elevation. Due to the elevational adjustability, an accommodation to the dimensions of the respective materials to be drawn is able to be effected: Elevational adjustment of the drawing dies can thereby be avoided.
  • the elevational adjustment of the lower drawing jaw is simpler than that of the drawing dies.
  • the inventive feature of the elevational adjustability of the lower drawing jaw can also be used for carriage drawing machines that are provided only for simultaneous drawing of a strand or rod. This feature is inventive also with respect to this carriage drawing machine.
  • the drawing jaws 48, 49 are disposed adjacent one another with a stationary drawing jaw 47 interposed.
  • the drawing jaws 48, 49 are displaceable on the wedge paths 52, 53 within the clamping path.
  • the strands or bars 50, 51 that are to be drawn are disposed adjacent one another.
  • the features of the invention are advantageously applicable not only for round solid and tubular material, but also for profile or sectional material, such as hexagonal, tape or band, flat and trapezoidal material and the like.
  • the drawing jaws are then, advantageously, to be provided wth corresponding shaped constructions.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Metal Extraction Processes (AREA)
  • Ropes Or Cables (AREA)
US05/828,884 1977-04-15 1977-08-29 Carriage drawing machine for uniformly drawing elongated material to be drawn Expired - Lifetime US4112730A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE2716657 1977-04-15
DE2716657A DE2716657C3 (de) 1977-04-15 1977-04-15 Schlittenziehmaschine zum gleichförmigen Ziehen von langgestrecktem Ziehmaterial

Publications (1)

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US4112730A true US4112730A (en) 1978-09-12

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US05/828,884 Expired - Lifetime US4112730A (en) 1977-04-15 1977-08-29 Carriage drawing machine for uniformly drawing elongated material to be drawn

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US (1) US4112730A (pt)
BR (1) BR7706151A (pt)
DE (1) DE2716657C3 (pt)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009037320A1 (en) * 2007-09-20 2009-03-26 Danieli & C. Officine Meccaniche Spa Drawing assembly for drawing machines and related method
CN109530465A (zh) * 2019-01-15 2019-03-29 中国重型机械研究院股份公司 一种承力面组合梁
WO2023063826A1 (en) * 2021-10-14 2023-04-20 Deme Offshore Nl B.V. Elongated body tensioner for pulling at least two elongated bodies along in a direction of movement

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3005371C2 (de) * 1980-02-11 1982-12-30 Mannesmann AG, 4000 Düsseldorf Schlittenziehmaschine zum fortlaufenden Ziehen strangförmigen Gutes

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2380277A (en) * 1940-02-15 1945-07-10 Budd Edward G Mfg Co Clamp for drawbenches or the like
US2492544A (en) * 1944-10-09 1949-12-27 Great Lakes Steel Corp Machine for cold-drawing bar stock
US3416350A (en) * 1966-02-23 1968-12-17 Martin Marietta Corp Gripping structure
US3690133A (en) * 1969-06-18 1972-09-12 Schumag Schumacher Metallwerke Method of controlling a machine tool operated at different working speeds and control system for performing the same
US3712104A (en) * 1970-01-22 1973-01-23 Kieserling & Albrecht Apparatus for clamping workpieces in draw benches for the like

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2380277A (en) * 1940-02-15 1945-07-10 Budd Edward G Mfg Co Clamp for drawbenches or the like
US2492544A (en) * 1944-10-09 1949-12-27 Great Lakes Steel Corp Machine for cold-drawing bar stock
US3416350A (en) * 1966-02-23 1968-12-17 Martin Marietta Corp Gripping structure
US3690133A (en) * 1969-06-18 1972-09-12 Schumag Schumacher Metallwerke Method of controlling a machine tool operated at different working speeds and control system for performing the same
US3712104A (en) * 1970-01-22 1973-01-23 Kieserling & Albrecht Apparatus for clamping workpieces in draw benches for the like

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009037320A1 (en) * 2007-09-20 2009-03-26 Danieli & C. Officine Meccaniche Spa Drawing assembly for drawing machines and related method
CN109530465A (zh) * 2019-01-15 2019-03-29 中国重型机械研究院股份公司 一种承力面组合梁
WO2023063826A1 (en) * 2021-10-14 2023-04-20 Deme Offshore Nl B.V. Elongated body tensioner for pulling at least two elongated bodies along in a direction of movement

Also Published As

Publication number Publication date
DE2716657A1 (de) 1978-10-26
DE2716657B2 (de) 1979-08-23
BR7706151A (pt) 1978-11-14
DE2716657C3 (de) 1980-04-24

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